Database Users

SM-N910K stuck on 3G in Brazil

Ok, so i ordered a SM-N910U from 28mobile.com, and they sent me a carrier branded SM-n910K, which by its specifications should work with Brazilian LTE (band 7 - 2600). However I am stuck on 3g. I was wondering if maybe the whole internet is wrong and this device doesnt support this band, or maybe its some sort of carrier lock. Also, how do i disable the awful branding, will flash a different firmware work and which do i flash?
Thanks

repl0id said:
Ok, so i ordered a SM-N910U from 28mobile.com, and they sent me a carrier branded SM-n910K, which by its specifications should work with Brazilian LTE (band 7 - 2600). However I am stuck on 3g. I was wondering if maybe the whole internet is wrong and this device doesnt support this band, or maybe its some sort of carrier lock. Also, how do i disable the awful branding, will flash a different firmware work and which do i flash?Thanks
Click to expand...
Click to collapse
1) check frequencies that U model supports @ samsung website (its asian/hong kong, right? those miss some frequencieos)
2) check which frequencies are used for 4g by your brazilian telco.
3) compare.
if frequencies match, you might want to try:
1) getting a new sim that is surely 4g-capable
2) getting an iphone nano-sim. this is crazy, but for many users in russian forums that has solved 4g connectivity issues with one telco.
3) making sure your plan supports 4g
4) ensure you have 4g coverage.

lisbon2004 said:
1) check frequencies that U model supports @ samsung website (its asian/hong kong, right? those miss some frequencieos)
2) check which frequencies are used for 4g by your brazilian telco.
3) compare.
if frequencies match, you might want to try:
1) getting a new sim that is surely 4g-capable
2) getting an iphone nano-sim. this is crazy, but for many users in russian forums that has solved 4g connectivity issues with one telco.
3) making sure your plan supports 4g
4) ensure you have 4g coverage.
Click to expand...
Click to collapse
1) Sim is 4g
2)will try
3) IT does
4) I do
Is the SM-N910U the same as the SM-N910K as far as LTE bands go? I dont get it, they are both supposed to support Band 7 - 2600MHZ, which is the one we have over here. What about flashing a different firmware? I've been trying with odin, to no success.

They do support that frequency so it's probably something to do with your sim card or carrier?
And 28mobile told me I was receiving one model only to get the k model like you. Wasn't happy. The updates for firmwares are slow

lawtq said:
They do support that frequency so it's probably something to do with your sim card or carrier?
And 28mobile told me I was receiving one model only to get the k model like you. Wasn't happy. The updates for firmwares are slow
Click to expand...
Click to collapse
Well, I am on a LTE plan, tried 3 different sims already, they are all stuck on 3G...And all our carriers have the same band, which is 7...So it's not the sim or the carrier...its the phone. I bet that there's some sort of lock going on, since all roaming options are grayed out (the phone is not stuck on roaming, however). I am trying to flash any other model's firmware, like U, C and even S, but odin always fails when trying.

repl0id said:
Ok, so i ordered a SM-N910U from 28mobile.com, and they sent me a carrier branded SM-n910K, which by its specifications should work with Brazilian LTE (band 7 - 2600). However I am stuck on 3g. I was wondering if maybe the whole internet is wrong and this device doesnt support this band, or maybe its some sort of carrier lock. Also, how do i disable the awful branding, will flash a different firmware work and which do i flash?
Thanks
Click to expand...
Click to collapse
When you ordered the "U"-model, and got a branded "K"-model, I would complain to the shop you bought it and demand a swap to the model you ordered!

Unlock Verizon S7 edge

Hi Guys,
I have read lot of comments & QA's, still i have no clarity.Some one please clarify me.
If i buy S7edge Verizon (Sd820) can i use it in india.Verizon bands are 2'4&13. However i heard that verizon lte phomes are unlocked. Can i use in india lte network(Jio or Airtwl LTE network.
However locking is software thing(firmware), can i install international firmware (935U , not sure) to unlock all lte bands, to use any simin world....
Indian lte bands.
TD LTE 2300Mhz
FD LTE 1800Mhz
Please help

This appears to show that if you flash the U firmware, you should be fine (if the information from this website is correct).
https://www.frequencycheck.com/comp...5u-galaxy-s7-edge-td-lte-samsung-hero-2/india
It shows that the 935U is capable of Band 3 (FDD 1800) and Band 40 (TDD 2300) for LTE.

Outbreak444 said:
This appears to show that if you flash the U firmware, you should be fine (if the information from this website is correct).
https://www.frequencycheck.com/comp...5u-galaxy-s7-edge-td-lte-samsung-hero-2/india
It shows that the 935U is capable of Band 3 (FDD 1800) and Band 40 (TDD 2300) for LTE.
Click to expand...
Click to collapse
Sorry I am interested in this as well. May I know if you read somewhere that can confirm the unlock of bands by flashing U firmware? I am not sure if the U firmware contains the baseband that would unlock the LTE bands.

brucezyc said:
Sorry I am interested in this as well. May I know if you read somewhere that can confirm the unlock of bands by flashing U firmware? I am not sure if the U firmware contains the baseband that would unlock the LTE bands.
Click to expand...
Click to collapse
Here's an article on XDA. It applies to the G930 but it is the same for the G935.

Outbreak444 said:
Here's an article on XDA. It applies to the G930 but it is the same for the G935.
Click to expand...
Click to collapse
Thank you very much. I'll go through it.

Outbreak444 said:
This appears to show that if you flash the U firmware, you should be fine (if the information from this website is correct).
https://www.frequencycheck.com/comp...5u-galaxy-s7-edge-td-lte-samsung-hero-2/india
It shows that the 935U is capable of Band 3 (FDD 1800) and Band 40 (TDD 2300) for LTE.
Click to expand...
Click to collapse
Thanks bro.... From the below image it shoews verzon model already has support for 3 and 40....so no need to unlock riggt?

Outbreak444 said:
Here's an article on XDA. It applies to the G930 but it is the same for the G935.
Click to expand...
Click to collapse
It shows that the 935V is capable of Band 3 (FDD 1800) and Band 40 (TDD 2300) for LTE.[/QUOTE] see attached screenshot, So no need to unlock to use in india right?

satish.yarramsetti said:
Thanks bro.... From the below image it shoews verzon model already has support for 3 and 40....so no need to unlock riggt?
Click to expand...
Click to collapse
satish.yarramsetti said:
It shows that the 935V is capable of Band 3 (FDD 1800) and Band 40 (TDD 2300) for LTE. see attached screenshot, So no need to unlock to use in india right?
Click to expand...
Click to collapse
From what others say, the U firmware runs better since it doesn't have all of the Verizon bloatware. I guess it's up to you whether you want to or not, but I would recommend flashing the U firmware since you don't really lose anything except HD calling and visual voicemail. You'll be able to use your hotspot for free since it won't check to see if you're subscribed, and you will get updates from Samsung rather than from Verizon.

Outbreak444 said:
From what others say, the U firmware runs better since it doesn't have all of the Verizon bloatware. I guess it's up to you whether you want to or not, but I would recommend flashing the U firmware since you don't really lose anything except HD calling and visual voicemail. You'll be able to use your hotspot for free since it won't check to see if you're subscribed, and you will get updates from Samsung rather than from Verizon.
Click to expand...
Click to collapse
I have the S7 Edge Unlock on Verizon. I can confirm the hotspot works. However it sucks not having Wi-FI calling or Visual Voicemail. I wish there was a way to get both.

AdobeCRT said:
I have the S7 Edge Unlock on Verizon. I can confirm the hotspot works. However it sucks not having Wi-FI calling or Visual Voicemail. I wish there was a way to get both.
Click to expand...
Click to collapse
There is if you root your phone and flash on a different rom that's based on U's firmware but adds Verizon's extra tweaks and still no bloatware. But then you run into the problem of having horrible performance on your phone, some people don't mind, others flash back to stock. Pick your poison I guess.

I got a galaxy S7 edge SM-G935FD what do I need to do to make it work on verizon?

Verizon is a CDMA network and S7 Edge for Verizon was built only for CDMA networks (https://www.unlockunit.com/blog/cdma-networks/)
You can check your phone's frequencies, but I suggest that before placing any unlocking order, check with your local carriers if they support that phone.
Make sure you have all this info beforehand so you won't have to pay for a useless unlocking.

definitive FACTS on all s8 variants

I bought a Verizon SM-G950UZKAVZW direct from Samsung. I thought that I was buying a phone that I could take to any carrier. I'm hearing that might not be true. Does anyone have definitive, confirmed specs ie supported radio bands on all of the carrier variants as well as the upcoming intl version? Also I heard other reports that the hardware is identical and it's firmware that is limiting the phones. Not sure if that is true either. Samsung was absolutely not helpful.
Bottom line I need to know:
1 if I keep the SM-G950UZKAVZW, will I be able to use it with other carrier networks?
2 if I can use the SM-G950UZKAVZW with other carriers, what actions (if any) would I need to take to do that? (Other than swapping a sim card)
3 would the phone I currently possess be limited in any way if I were to use it with other carriers? (Limited is defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how would it be limited?
4 if I were to purchase an unlocked international model once it becomes available, would that phone be limited in any way when used on any US carrier? (Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
If you aren't sure, please don't reply. There's plenty of people documenting their best guess already. I'm looking for the straight story.
Thanks for reading!

All of Verizon phones are Sim card unlocked and since there is really only 1 version of the S8/S8+ in the US (with different model #'s corresponding to the different carriers) using the phone on another carriers network is not going to be an issue. All you need to do is insert the sim card in.
http://www.gottabemobile.com/how-to-unlock-the-galaxy-s8/
As a quick note, if you have a Verizon Galaxy S8 congratulations. Your phone is already unlocked. Verizon Wireless no longer locks phones, regardless of what you might hear from friends or family. Simply drop a T-Mobile or AT&T SIM card in a Verizon model and it works. It may require manually configuring the APN settings though, so keep that in mind.
Click to expand...
Click to collapse
The ONLY exception that might be would be Sprint since they are CDMA as well, but who really wants to go from Verizon to Sprint?????
All 4 Major US(and subsequent sub carriers) are receiving the same version of the phone(meaning same internals). From my understanding, inserting the carriers Sim card into the verizon phone just means you start going at that point and have access to all the carriers bands
If you got an international version, it most likely would be powered by an Exynos CPU vs the Snapdragon 835 so there would be some performance differences (typically Exynos models perform marginally better based on previous history)
If you're looking for a US unlocked model - wait until next month
http://www.theverge.com/circuitbrea...-unlocked-galaxy-s8-plus-pricing-release-date

I appreciate your clear response! Would it be accurate to say that I will have just as much freedom to hop from one carrier to another using the phone I have, as opposed to purchasing the upcoming US unlocked variant?
Also, I have heard the same thing about the hardware, that all of the carrier variants are the same physical model. But some folks, including the Samsung tech support rep I spoke to (unfortunately that probably doesn't mean a whole lot) seem to think that the carrier firmware is limiting the radio bands. Do you know this to be false?

I have the Verizon version and works fine on Tmo out of the box. Have to use Verizon update software through Windows though. OTA's will never come through.

I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8

I saw a review that said the s8 gets locked to the first carrier sim it accepts. Can someone confirm swapping sims of different carriers works?

Whanksta said:
I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8
Click to expand...
Click to collapse
Have you tried going into the network band menu and locking it to one of the AT&T LTE bands?
This still works on the S8 (found this on the S7 and used it to lock my S7 to band 4 for Tmobile)
https://forum.xda-developers.com/tm...ng-network-t3331555/post65722081#post65722081

ElBeaner said:
Have you tried going into the network band menu and locking it to one of the AT&T LTE bands?
This still works on the S8 (found this on the S7 and used it to lock my S7 to band 4 for Tmobile)
https://forum.xda-developers.com/tm...ng-network-t3331555/post65722081#post65722081
Click to expand...
Click to collapse
I am unable to access the service menu via the S7 method

Whanksta said:
I am unable to access the service menu via the S7 method
Click to expand...
Click to collapse
Ok forgot you were Verizon - you have to edit a setting because they block you from that access
Try this if you're daring enough
https://forum.xda-developers.com/verizon-galaxy-s6/general/enabling-using-servicemode-t3109579
EDIT Damn, looks like you have to be rooted first
---------- Post added at 12:06 PM ---------- Previous post was at 11:18 AM ----------
Whanksta said:
I am unable to access the service menu via the S7 method
Click to expand...
Click to collapse
You'll need to wait unti the official AT&T rom is available from Smasung and then you should be able to flash it via ODIN onto the phone and get all the AT&T carrier bands

mredamon said:
I bought a Verizon SM-G950UZKAVZW direct from Samsung. I thought that I was buying a phone that I could take to any carrier. I'm hearing that might not be true. Does anyone have definitive, confirmed specs ie supported radio bands on all of the carrier variants as well as the upcoming intl version? Also I heard other reports that the hardware is identical and it's firmware that is limiting the phones. Not sure if that is true either. Samsung was absolutely not helpful.
Bottom line I need to know:
4 if I were to purchase an unlocked international model once it becomes available, would that phone be limited in any way when used on any US carrier? (Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
Click to expand...
Click to collapse
Once it becomes available? You can buy Exynos right now from other countries. Clove in UK will region unlock the phone before shipping to you in the U.S. What needs to become available?
Don't confuse the "unlocked" S8 Samsung will sell here in the U.S. in a month or so with the Exynos international variant. The "unlocked" S8 coming to the U.S. is still the bootloader locked Snapdragon version, just without carrier branding. It will be carrier unlocked but not bootloader unlocked. If you care about rooting, TWRP, ROMs, etc Exynos is what you want.
would that (Exynos international variant) phone be limited in any way when used on any US carrier?
(Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
Click to expand...
Click to collapse
NO, except if you are on CDMA-handicapped Sprint or Verizon. If you use Sprint or Verizon be aware Exynos doesn't have 3G CDMA bands to fall back on if you can't get LTE. For AT&T or T-Mobile, YES it has all the LTE/HSPA/GSM bands.
The "international" Exynos variant can be bootloader unlocked, rooted, etc. so tons of advantages. While it has Verizon LTE bands, there's no CDMA. This means you really need Verizon VoLTE to work and I don't have the answer to that. And if you can't get LTE signal on mobile network, you won't have any signal due to no CDMA fallback. Again, only an issue because of CDMA if you stay on Verizon instead of using AT&T or T-mobile (or their network affiliates). You seem like you want to switch to another carrier? So, go ahead and do so!
EXYNOS VARIANTS LTE BANDS:
LTE Bands: FDD: B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B13(700), B17(700), B18(800), B19(800), B20(800), B25(1900), B26(800), B28(700), B32(1500), B66(AWS- 3) | TDD: B38(2600), B39(1900), B40(2300), B41(2500)
GSM/GPRS
850 / 900 / 1800 / 1900 MHz
3G/HSPA
850 / 900 / 1900 / 2100 MHz

ChazzMatt said:
Once it becomes available? You can buy Exynos right now from other countries. Clove in UK will region unlock the phone before shipping to you in the U.S. What needs to become available?
Don't confuse the "unlocked" S8 Samsung will sell here in the U.S. in a month or so with the Exynos international variant. The "unlocked" S8 coming to the U.S. is still the bootloader locked Snapdragon version, just without carrier branding. It will be carrier unlocked but not bootloader unlocked. If you care about rooting, TWRP, ROMs, etc Exynos is what you want. /QUOTE]
Yeah I screwed up. I did confuse them.
I'm not interested in all that rooting stuff I just want a phone that pretty much works anywhere I want to take it and if it's slower on one network than another I wanna know what I'm getting myself into.
Click to expand...
Click to collapse

Whanksta said:
I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8
Click to expand...
Click to collapse
Hey guys
I'm from Brazil and I wanna buy the Verizon's S8 but I'm afraid about the 4G.
I saw that this model has the Brazil LTE frequencies, but I read here that Verizon capped the band from the firmware.
Somebody knows if I could flash via ODIN the unlocked rom that will come with the unlocked version in USA and so get the LTE free to use in any place?
I don't want to assume the risk to have a top mobile phone but don't be able to use 4G.
Thank you very much guys

Hey mredamon. Did you ever get a clear response here or somewhere else about this?

SM-G950F on T-Mobile US - CSC, WiFi Calling, VoLTE, 256QAM, 4x4 MIMO?

I am considering upgrading to the S8. I like that the G950F has an unlocked bootloader on a phone that has (almost) everything I want.
But it seems like it's a bit of a hassle to get it to work fully on the T-Mobile network. It looks like I can flash the CSC to enable WiFi Calling and VoLTE on it, but is there any hope for 256QAM and 4x4 MIMO? There's hardly any information about this other than one or two threads. So I'd like to know:
If I go with the G950F over the T-Mobile or Unlocked US variants, what am I missing out on out of the box?
What will flashing the T-Mobile CSC not fix? (I currently think it does fix WiFi Calling and VoLTE.)
Can I flash the T-Mobile US modem on the G950F to fix this, or will that just brick my device? (Snapdragon image on Exynos terrifies me.)
Am I missing some other way (like a secret service mode or something) that would allow me to force 256QAM and/or 4x4 MIMO on the G950F?
I really hate that I can't just have a US model with an unlocked bootloader...

I think Galaxy S8 International variant maybe missing some bands and I would suggest you either get T-Mobile as you mentioned or US unlocked. With US unlocked which I already ordered from Samsung, should support all T-Mobile features: VoLTE, Band 12 and WiFi Calling. At the moment Samsung offers $200 off if you trade in any Android or iOS device. Just check their page for Trade-in details.

Charkatak said:
I think Galaxy S8 International variant maybe missing some bands and I would suggest you either get T-Mobile as you mentioned or US unlocked. With US unlocked which I already ordered from Samsung, should support all T-Mobile features: VoLTE, Band 12 and WiFi Calling. At the moment Samsung offers $200 off if you trade in any Android or iOS device. Just check their page for Trade-in details.
Click to expand...
Click to collapse
Can I trade any device?
I got a one plus one somewhere.

borisb said:
Can I trade any device?
I got a one plus one somewhere.
Click to expand...
Click to collapse
I don't see why you can't. It said any Android/iOS device, but just has to be in good condition. Check it out: http://www.samsung.com/us/trade-in/terms-and-conditions/

I'm using an international S8 on Tmobile, works fine. I'm in the middle of nowhere and it actually gets better signal than a Tmobile Pixel and S6 Edge I had before.

sketron13 said:
I'm using an international S8 on Tmobile, works fine. I'm in the middle of nowhere and it actually gets better signal than a Tmobile Pixel and S6 Edge I had before.
Click to expand...
Click to collapse
Does you phone show 4G or 4G LTE?

It has 4G LTE shown

sketron13 said:
It has 4G LTE shown
Click to expand...
Click to collapse
Hmm, I don't remember which bands exactly and how many, but F model had some bands missing for T-Mobile.

Just one night frequency

The exynos variant lacks 4x4 mimo and 256qam from what I've read. It achieves 1gb down via 5xCA. But also only allows it to max upload at 150mb/s
So it would only be able to utilize the 3xCA from tmobile. And not get max possible downloads. But the F does support all 3 of t-mobile's used bands

Acoustichayes said:
The exynos variant lacks 4x4 mimo and 256qam from what I've read. It achieves 1gb down via 5xCA. But also only allows it to max upload at 150mb/s
So it would only be able to utilize the 3xCA from tmobile. And not get max possible downloads. But the F does support all 3 of t-mobile's used bands
Click to expand...
Click to collapse
Got it. That's what I was looking for, thanks. My understanding is that it's a hardware issue that can't easily be fixed via service mode or flashing something, but it doesn't look like I'd miss out on much overall.
I am in a 4x4 MIMO service area though so maybe I'll just hold out for now and see what happens over the next few weeks/months.

Can someone point me to the thread for how to make a sm-g950f have volte and wifi calling on T-Mobile?
My searches turned up nothing concrete if this is possible but I found a Note 8 thread that sounded promising.

Does anyone know if I were to flash the latest Germany T-Mobile firmware (DTM) from Sammobile, would that enable VoLTE, WiFi Calling here in the US?
Currently my G950F S8 has the Australian (XSA) firmware installed and it doesn't have VoLTE or WiFi Calling. The WiFi Calling setting in Quicktiles is greyed out.

Carrier Aggregation on S7 Edge Exynos Unlocked version (SM-G935F)

I recently bought an S7 edge unlocked SM-G935F Exynos version. I am currently using it on T-Mobile and have VoLTE and WiFi calling after flashing the TMobile CSC. However, I cannot get the right bands working for Carrier Aggregation. When I go into ServiceMode, the only CA combinations showing are :
7C(A)
7A-7A(A-n)
There's nothing about bands 2, 4, or 12 that T-Mobile uses. I've tried using various ROMs and CSC tools to try to get the correct bands for CA to show up but nothing. Does anyone have any insight on how to get this enabled? I saw something a year old on reddit but the details were a little vague.

https://forum.xda-developers.com/galaxy-s8+/how-to/root-how-to-carrier-aggregation-t-t3687466

5upon said:
https://forum.xda-developers.com/galaxy-s8+/how-to/root-how-to-carrier-aggregation-t-t3687466
Click to expand...
Click to collapse
Tried what was mentioned in that article. It didn't work. No idea why the CA is also only showing Band 7 when T-Mobile only uses 2,4,12.
What's even more strange... I brought the phone overseas to Taiwan last week, popped in a Chunghwa Telecom SIM, and all CA band combos for LTE bands 3,7,8,28 showed up without any issues and the phone was lightning fast.

reedog117 said:
popped in a Chunghwa Telecom SIM, and all CA band combos for LTE bands 3,7,8,28 showed up without any issues and the phone was lightning fast.
Click to expand...
Click to collapse
Check with another US SIM card and see if the T-Mobile card's behavior or the Taiwanese one is replicated.
Try with a Metro, Cricket or AT&T card.
Also, on which network was this phone previously used? Because I am not sure if I'm right but if it was used with a CDMA network, it might not work with GSM US networks (not sure about it tho).

RossTeagan said:
Check with another US SIM card and see if the T-Mobile card's behavior or the Taiwanese one is replicated.
Try with a Metro, Cricket or AT&T card.
Also, on which network was this phone previously used? Because I am not sure if I'm right but if it was used with a CDMA network, it might not work with GSM US networks (not sure about it tho).
Click to expand...
Click to collapse
I know the previous owner on Swappa said that he used the phone with Cricket, but no clue if he checked if CA was working. Also I thought the Exynos varieties didn’t have any support for CDMA.
Sent from my iPhone using Tapatalk